JP2014144132A - Guide wire storage body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide wire storage body which can perform pretreatment for expressing lubricity on the surface of a guide wire without bothering an operator.SOLUTION: In a guide wire storage body 20 having an inner cavity 20d capable of storing a guide wire 10, a hole 20p is provided which communicates the inner cavity 20d with the outside, whereby pretreatment (treatment for expressing lubricity) of the guide wire 10 subjected to hydrophilic coating treatment can be performed only by immersing the guide wire storage body 20 in a liquid, such as physiologic saline. As a result, time and labor of an operator for injecting a liquid into the inner cavity 20d of the guide wire storage body 20 can be eliminated to prevent the operator from being bothered by the pretreatment.

Description

  The present invention relates to a guide wire storage body that stores a guide wire.

  A guide wire for use in inserting a catheter into a blood vessel is known. When inserting a catheter, a guide wire is first inserted into a blood vessel and advanced to the vicinity of a lesioned part (for example, a blocked part of a blood vessel), and then the catheter is advanced along the guide wire. In this manner, various treatments are performed through the catheter with the catheter inserted to the vicinity of the lesioned part of the blood vessel.

  In order to smoothly advance the guide wire in a blood vessel or a tube such as a catheter, it is desirable to reduce friction between the surface of the guide wire and the inner wall of the blood vessel as much as possible. From such a viewpoint, a technique for covering the surface of the guide wire with a hydrophilic coating agent has been proposed (for example, Patent Document 1). When performing a procedure using such a guide wire, the surface of the guide wire is made to exhibit lubricity by performing a pre-treatment of immersing the guide wire in a liquid such as physiological saline prior to the procedure.

  The guide wire is usually carried in a state of being stored in a thin tube-shaped guide wire storage body. When a hydrophilic coating is applied to the guide wire in the guide wire housing body, the pretreatment is performed by injecting a liquid such as physiological saline into the guide wire housing body (for example, Patent Document 2).

JP 2008-237621 A Japanese Patent Laid-Open No. 9-225037

  However, in order to perform the above-described pretreatment (treatment for developing lubricity on the surface of the guide wire), it is necessary for the operator to inject the liquid into the guide wire storage body, which makes the pretreatment complicated. There was a problem.

  The present invention has been made in response to the above-mentioned problems of the prior art, and can perform pre-processing for expressing lubricity on the surface of the guide wire without bothering the operator. The purpose is to provide technology.

  In order to solve the above-described problems, the guide wire housing of the present invention employs the following configuration. That is, the gist is a guide wire storage body having a lumen capable of storing a guide wire, and the lumen is provided with a hole communicating with the outside.

  A guide wire whose surface is covered with a hydrophilic coating agent is housed in the lumen of the guide wire housing body of the present invention. In this state, if the guide wire housing (and the guide wire) is immersed in a liquid such as physiological saline, the liquid flows into the lumen from the hole of the guide wire housing, so that the guide wire is pretreated. (Treatment for expressing lubricity on the surface) can be performed. As a result, it is not necessary for the operator to inject the liquid into the guide wire housing, so that it is possible to avoid a situation in which the operator's hand is bothered by the pretreatment.

  Further, in the above-described guide wire housing of the present invention, a hole may be formed in a long hole shape in the axial direction of the lumen of the guide wire housing.

  If it carries out like this, a liquid can be spread quickly toward the axial direction of the lumen | bore of a guide wire accommodating body. As a result, the pretreatment of the guide wire can be performed more quickly. Moreover, such a long hole can be easily formed simply by providing a cut (slit) in the axial direction of the guide wire housing.

  In the above-described guide wire housing of the present invention, a plurality of holes may be provided intermittently in the axial direction of the lumen.

  In such a guide wire housing, a wall (portion through which the guide wire housing does not penetrate) exists between the holes. Therefore, it becomes possible to suppress that a guide wire is exposed outside from the hole of a guide wire accommodating body by the part becoming a barrier.

  In the above-described guide wire housing of the present invention, a hole may be provided in a spiral around the central axis of the lumen.

  In this way, the flexibility of the guide wire housing can be ensured. Since the guide wire housing (and guide wire) is usually packed in a concentric manner, the guide wire can be easily packed by securing the flexibility of the guide wire housing. It becomes.

  In the above-described guide wire housing of the present invention, the hole width in the direction orthogonal to the axial direction of the lumen may be set smaller than the diameter of the guide wire. In this way, it is possible to reliably prevent the guide wire from being exposed to the outside of the guide wire housing body from the hole. As a result, the guide wire can be kept more hygienic.

  In the above-described guide wire housing of the present invention, a hole for allowing a liquid to flow into the lumen may be formed as follows. That is, the hole is formed in a tapered shape whose width becomes narrower toward the lumen of the guide wire housing. And it is good also as setting the width | variety of the part where a hole becomes narrowest smaller than the diameter of a guide wire.

  Even in this case, the width of the narrowest portion of the hole is smaller than the diameter of the guide wire, so that the guide wire can be prevented from being exposed to the outside of the guide wire housing. Further, since the hole width (that is, the opening width) on the outer peripheral side of the guide wire housing can be increased, the inflow of liquid into the guide wire housing can be promoted. As a result, the pretreatment of the guide wire can be performed more quickly.

It is explanatory drawing which showed schematic structure of the guide wire accommodating body of 1st Embodiment. It is a cross-sectional view of the guide wire storage body of the first embodiment. It is a cross-sectional view of the guide wire storage body of the second embodiment. It is explanatory drawing which showed schematic structure of the guide wire accommodating body of 3rd Embodiment. (A) is a general | schematic perspective view of a guide wire accommodating body, (b) And (c) is explanatory drawing which showed a mode when a hole was seen from drawing upper direction. It is explanatory drawing which showed schematic structure of the guide wire accommodating body of 4th Embodiment. (A) is a general-view perspective view of a guide wire storage body in which a square hole-shaped hole is provided at one place on the side surface, and (b) is a round hole-shaped hole provided in one place on the side face. It is a general-view perspective view of the guide wire storage body. It is a side view of the guide wire storage body of 5th Embodiment.

A. First embodiment:
Below, in order to clarify the content of the present invention described above, various embodiments of the guide wire housing of the present invention will be described.
FIG. 1 is an explanatory diagram showing a schematic configuration of a guide wire housing 20 according to the first embodiment. The illustrated guide wire storage body 20 is formed in an elongated tube shape, and the guide wire 10 is stored in the lumen thereof.

  The illustrated guide wire storage body 20 of the present embodiment is formed in a hollow cylindrical shape. However, the guide wire storage body 20 only needs to have a lumen for storing the guide wire 10 therein. Therefore, for example, the guide wire storage body 20 may be formed in a hollow prism shape. (The illustration is omitted).

  Further, the guide wire storage body 20 of the present embodiment is provided with a hole 20p on the side surface thereof. The hole 20p is provided in the axial direction of the guide wire storage body 20 (and its lumen), and the lumen of the guide wire storage body 20 communicates with the outside through the hole 20p.

  In the guide wire storage body 20 of the present embodiment, the hole 20p is prevented from reaching the end of the guide wire storage body 20. Of course, the hole 20p may reach the end portion of the guide wire storage body 20. However, according to the present embodiment, the guide wire 10 and the guide wire storage body 20 interfere with each other at the end portion of the guide wire storage body 20. By doing so, exposure of the guide wire 10 to the outside can be suppressed.

FIG. 2 is a cross-sectional view of the guide wire housing 20 of the first embodiment. 2 shows a cross-sectional view of the guide wire housing 20 (and the guide wire 10) when the AA cross section shown in FIG. 1 is viewed from the direction of the arrow.
As shown in the drawing, a lubrication layer 12 is provided on the surface of the guide wire 10 to ensure lubricity in the blood vessel. The constituent material of the lubricating layer 12 includes, for example, a cellulose polymer material, a polyethylene oxide polymer material, a maleic anhydride polymer material (such as methyl vinyl ether-maleic anhydride copolymer), and an acrylamide polymer material. (Polyacrylamide, polyglycidyl methacrylate-dimethylacrylamide (PGMA-DMAA) block copolymer, etc.), water-soluble nylon, polyvinyl alcohol, polyvinylpyrrolidone and the like.

  Further, the hole 20p of the guide wire storage body 20 of the present embodiment is formed so that the width thereof (the width in the direction perpendicular to the axial direction of the lumen 20d) is a predetermined width b. The width b of the hole 20p is set smaller than the diameter a of the guide wire 10 stored in the guide wire storage body 20.

  When using the guide wire 10 stored in the guide wire storage body 20 of this embodiment, the following operation is performed prior to use. First, a container (such as a bat) having a size that can accommodate the guide wire storage body 20 is prepared, and a liquid such as physiological saline is placed in the container. Next, the guide wire 10 together with the guide wire storage body 20 is immersed in the liquid in the container. As a result, the liquid flows from the hole 20p into the inner cavity 20d of the guide wire housing 20, and the liquid contacts the surface of the guide wire 10 (lubricating layer 12). As a result, lubricity can be expressed on the surface of the guide wire 10.

  Here, in the case where a hole is not provided in the guide wire storage body as in the conventional guide wire storage body, in order to perform pretreatment for expressing lubricity on the surface of the guide wire 10, the guide wire storage body It is necessary to inject liquid into the lumen from the end using a syringe or the like. On the other hand, if the hole 20p is provided like the guide wire storage body 20 of the present embodiment, the guide wire storage body 20 (and the guide wire 10) can be simply immersed in the container containing the liquid. Processing can be performed. As a result, it is possible to save time and effort for preprocessing, so that the surgeon can start the procedure smoothly.

  Further, in the guide wire storage body 20 of the present embodiment, the hole 20p is formed in a long hole shape in the axial direction of the guide wire storage body 20 (and its inner cavity 20d). Accordingly, the liquid can be quickly spread in the axial direction of the lumen 20d. As a result, it is possible to reduce the time required for the pretreatment of the guide wire 10.

  Further, in the guide wire storage body 20 of the present embodiment, the width b of the hole 20p (the width b in the direction perpendicular to the axial direction of the lumen 20d) is set smaller than the diameter a of the guide wire 10 (FIG. 2). Here, the width b of the hole 20p may be set larger than the diameter a of the guide wire 10. However, by setting the width b of the hole 20p to be smaller than the diameter a of the guide wire 10 as in the present embodiment, the guide wire 10 can be prevented from being exposed from the hole 20p of the guide wire storage body 20. . As a result, it is possible to avoid a situation in which the guide wire 10 is contaminated due to the provision of the hole 20p.

  There are other related embodiments in the first embodiment described above. In the following, other embodiments will be briefly described. In addition, in the following description, the same number is attached | subjected about the same structure as the guide wire accommodating body 20 of 1st Embodiment, The detailed description is abbreviate | omitted.

B. Second embodiment:
FIG. 3 is a cross-sectional view of the guide wire storage body 22 of the second embodiment. The guide wire storage body 22 of the illustrated embodiment is different from the guide wire storage body 20 of the first embodiment described above in the shape of the hole 22p. That is, in the guide wire storage body 22 of the present embodiment, the shape of the hole 22p is a taper whose width becomes narrower toward the inner cavity 20d (in other words, from the outer peripheral surface of the guide wire storage body 22 toward the inner peripheral surface). It is formed into a shape. The width b of the portion where the hole 22p is the narrowest is set to be smaller than the diameter a of the guide wire 10.

  In the illustrated guide wire housing body 22 of the present embodiment, the width c of the portion where the hole 22p is widest (the opening on the outer peripheral side of the guide wire housing body 22) is set larger than the diameter a of the guide wire 10. Has been. However, the size of the width c may be set larger than the width b of the portion where the hole 22p is narrowest and smaller than the diameter of the guide wire 10. (The illustration is omitted).

  Also in the guide wire housing body 22 of this embodiment, since the hole 22p is provided in the side surface portion, the front of the guide wire 10 is similar to the guide wire housing body 20 of the first embodiment described above. Processing can be performed easily. Further, since the width b of the portion where the hole 22p is the narrowest is set to be smaller than the diameter a of the guide wire 10, the guide wire 10 can be prevented from being exposed from the guide wire storage body 22. Further, in the guide wire storage body 22 of the present embodiment, the hole 22p is formed in a tapered shape, and as a result, the hole 22p is greatly opened on the outer peripheral side of the guide wire storage body 22 as compared with the first embodiment. It has become. As a result, since the intake of the liquid (such as physiological saline) from the outside into the guide wire housing 22 is promoted, the pretreatment can be performed more quickly.

C. Third embodiment:
In the guide wire housings of the first and second embodiments described above, the holes are provided in a long hole shape (in other words, continuously) in the axial direction of the guide wire housing and the lumen thereof. Explained as a thing. On the other hand, it is good also as providing a hole intermittently toward the axial direction of a guide wire accommodating body (and its lumen | bore).

FIG. 4 is an explanatory diagram showing a schematic configuration of the guide wire storage body 24 of the third embodiment. (A) is a general-view perspective view of the guide wire storage body 24, and (b) and (c) are explanatory views showing a state when the hole 24p is viewed from above the drawing.
A plurality of small holes 24p are arranged in a line (that is, intermittently) on the side surface portion of the guide wire storage body 24 of the illustrated embodiment in the axial direction of the guide wire storage body 24 (and its lumen). Is provided.

  In this embodiment, the hole 24p is formed in a square hole shape as shown in FIG. 4B, but the hole 24p is a round hole as shown in FIG. 4C. It is good also as making it into a shape.

  Moreover, the cross-sectional shape of the hole 24p of this embodiment is the cross-sectional shape of the hole 20p of the first embodiment (see FIG. 2), the cross-sectional shape of the hole 22p of the second embodiment (see FIG. 3), etc. (The illustration is omitted).

  In the guide wire storage body 24 of the present embodiment as well, the guide wire storage body 24 (and the guide wire storage body 24) in the container in which the liquid is placed, like the guide wire storage bodies of the first embodiment and the second embodiment described above. The above pretreatment can be carried out simply by immersing the wire 10). Further, when the holes 24p are provided intermittently as in the present embodiment, a wall (a portion where the guide wire housing body 24 does not penetrate) exists between the holes 24p. Therefore, it is possible to prevent the guide wire 10 from being exposed to the outside of the guide wire housing body 24 when this portion interferes with the guide wire 10.

D. Fourth embodiment:
In the guide wire storage body 24 of the third embodiment described above, a plurality of holes 24p are intermittently provided in the axial direction of the guide wire storage body 24 and the inner cavity 20d thereof. However, the hole may be provided only at one place on the side surface of the guide wire housing.

FIG. 5 is an explanatory diagram showing a schematic configuration of the guide wire storage body 26 of the fourth embodiment.
(A) is a general-view perspective view of a guide wire storage body in which a square hole-shaped hole is provided at one place on the side surface, and (b) is a round hole-shaped hole provided in one place on the side face. It is a general-view perspective view of the guide wire storage body.

  Also in the guide wire storage body 26 of this embodiment, the pretreatment of the guide wire 10 can be easily performed as in the guide wire storage bodies of the various embodiments described above. Further, the hole 26p can be easily provided only by passing through one place on the side surface of the guide wire housing 26.

E. Fifth embodiment:
It has been described that in the guide wire housings of the first to third embodiments described above, holes are provided linearly in the axial direction of the guide wire housing (and its lumen). However, the hole may be provided spirally around the central axis of the lumen as follows.

  FIG. 6 is a side view of the guide wire storage body 28 of the fourth embodiment. As shown in the drawing, the guide wire storage body 28 of the present embodiment is provided with a hole 28p spirally around the central axis of the lumen 20d. In the illustrated example, the holes 28p are provided without interruption (continuously). However, the holes 28p are provided intermittently as in the guide wire storage body 24 of the third embodiment described above. The holes 28p may be spirally arranged around the central axis of the lumen 20d (not shown). Moreover, the cross-sectional shape of the hole 28p of this embodiment is the cross-sectional shape of the hole 20p of the first embodiment (see FIG. 2), the cross-sectional shape of the hole 22p of the second embodiment (see FIG. 3), etc. (The illustration is omitted).

  As described above, also in the guide wire housing 28, the pretreatment of the guide wire 10 can be easily performed as in the case of the guide wire housings of the various embodiments described above. Further, since the hole 28p is provided in a spiral shape around the central axis of the inner cavity 20d, the flexibility of the guide wire housing 26 is ensured as compared with the guide wire housings of the various embodiments described above. Can do. As a result, when the guide wire storage body 28 (and the guide wire 10) is wound and packaged, it is possible to facilitate the winding.

  As mentioned above, although the guide wire storage body of various embodiment was demonstrated, this invention is not restricted to said embodiment, In the range which does not deviate from the summary, it is possible to implement in various aspects. For example, in the guide wire storage bodies of the various embodiments described above, it has been described that only one row of holes is provided in the axial direction, but a plurality of holes may be provided. In this way, the opening area of the guide wire housing can be increased, so that the liquid can flow more rapidly into the lumen of the guide wire housing as compared with the case where the holes are only in one row. As a result, it is possible to complete the pretreatment for expressing lubricity on the surface of the guide wire 10 at an early stage, and to move to the procedure more smoothly.

10 ... guide wire,
12 ... Lubrication layer,
20, 22, 24, 26, 28 ... guide wire housing,
20d ... lumen,
20p, 22p, 24p, 26p, 28p ... hole

Claims (6)

A guide wire storage body having a lumen capable of storing a guide wire,
A guide wire housing body in which a hole communicating with the outside is provided in the lumen. The guide wire storage body according to claim 1,
The guide wire storage body in which the hole is formed in a long hole shape toward the axial direction of the lumen. The guide wire storage body according to claim 1 or 2,
A guide wire housing body in which a plurality of the holes are provided intermittently in the axial direction of the lumen. A guide wire storage body according to any one of claims 1 to 3,
The hole is a guide wire housing provided in a spiral shape around the central axis of the lumen. A guide wire storage body according to any one of claims 1 to 4,
A guide wire storage body in which a width of the hole in a direction orthogonal to the axial direction of the lumen is set smaller than a diameter of the guide wire. A guide wire storage body according to any one of claims 1 to 4,
The hole is formed in a tapered shape whose width becomes narrower toward the lumen;
A guide wire housing in which a width of a portion where the hole is narrowest is set smaller than a diameter of the guide wire.